CN105170857B - Large-scale narrow shelves two-flange shaft head forging forging mold and forging method - Google Patents
Large-scale narrow shelves two-flange shaft head forging forging mold and forging method Download PDFInfo
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- CN105170857B CN105170857B CN201510576210.XA CN201510576210A CN105170857B CN 105170857 B CN105170857 B CN 105170857B CN 201510576210 A CN201510576210 A CN 201510576210A CN 105170857 B CN105170857 B CN 105170857B
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- 238000005242 forging Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009413 insulation Methods 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of spindle nose forging forging, more particularly to a kind of large-scale narrow shelves two-flange shaft head forging forging mold and forging method.It is an object of the invention to provide the double flange type forging process for fuel moulds of the large-scale narrow shelves of one kind and forging method, to solve to forge the problems such as surplus is too big, allowance is big, mechanical performance is bad at prior art flange and narrow shelves.The double flange type forging process for fuel moulds of large-scale narrow shelves, are made up of upper internal model, core insert and external mold；External mold is step cylindrical structure, and upper inner diameter is less than lower inner diameter；Upper internal model is two halves formula cylinder type, and external diameter is equal to external mold upper inner diameter, and the difference of two flange height is highly subtracted equal to external mold upper height, and internal diameter is equal to forging external diameter；Core insert is cylinder type, and external diameter is equal to external mold lower inner diameter, highly equal to external mold lower height, and internal diameter is equal to forging external diameter.
Description
Technical field
The invention belongs to the technical field of spindle nose forging forging, more particularly to a kind of large-scale narrow shelves two-flange shaft head class forging
Part forging mold and forging method.
Background technology
The mould of the narrow shelves of large double-flange is not forged in existing forging molding equipment, completely using open die forging, to tup
Specification requirement is more, and traditional large-scale narrow shelves two-flange shaft head class product forging molding process is made up of following process：
First fire：Steel ingot pressing tongs handle, chamfered edge goes to the mouth of a river
Second fire：Jumping-up, pulling
3rd fire：Jumping-up, pulling, pressure shoulder, planar end surface
4th fire：Step is extracted, each portion is forged to size, finishing goes out finished product
The shortcoming of traditional handicraft is：
（One）, flange and narrow shelves forging surplus it is too big, cause forge weight big, waste raw material,
（Two）, use open die forging completely at flange and narrow shelves, cause allowance big,
（Three）, narrow shelves by cold-formed, cause fibr tissue discontinuous, mechanical performance is bad,
（Four）, allowance excessive at narrow shelves cause honest material processing to be processed, clout magnetic powder inspection is easily unqualified.
The content of the invention
It is existing to solve it is an object of the invention to provide the double flange type forging process for fuel moulds of the large-scale narrow shelves of one kind and forging method
Have that to forge surplus at technology flange and narrow shelves too big, cause forge weight big, waste raw material；It is complete at flange and narrow shelves
Using open die forging, cause allowance big；Narrow shelves cause fibr tissue discontinuous, mechanical performance is bad by cold-formed；It is narrow
Excessive allowance causes honest material processing to be processed at shelves, the problems such as clout magnetic powder inspection is easily unqualified.
The present invention solves its technical problem and uses following technical scheme
The present invention relates to a kind of forging method for preparing the double flange forgings of large-scale narrow shelves, it is characterised in that uses following step
Suddenly, it is made up of using forging mold upper internal model, core insert and external mold；External mold is step cylindrical structure, under upper inner diameter is less than
Portion's internal diameter；Upper internal model is two halves formula cylinder type, and external diameter is less than external mold upper inner diameter, highly subtracted equal to external mold upper height
The difference of two flange height, internal diameter is substantially equal to forging upper end external diameter；Core insert is cylinder type, and external diameter is more than in external mold bottom
Footpath, highly equal to external mold lower height, internal diameter is substantially equal to forging lower end external diameter；
First fire：Heating Steel Ingots are to 1150-1250 DEG C, and insulation, pressing tongs handle, chamfered edge goes to the mouth of a river；
Second fire：1150-1250 DEG C is heated to, is incubated, by open die forging, jumping-up, pulling, pressure shoulder is extracted spacer flanger, made
The external diameter of spacer flanger and external mold upper inner diameter are of substantially equal；The two ends of central flange are pulled out again, make upper end external diameter and upper internal model
Internal diameter is of substantially equal, and lower end external diameter and core insert internal diameter are of substantially equal；In second fire, then when pulling out the two ends of central flange, its
Pulling is than being 3.64-4.07；
3rd fire：1150-1250 DEG C is heated to, insulation, core insert is placed in external mold, the forging after insulation is put into lower
In mould, internal model is placed into, jumping-up upper end makes end flange and external mold internal diameter of substantially equal, take out forging, removed in upper
Mould；In 3rd fire, during jumping-up upper end, its upset ratio is 3.64-4.08；
4th fire：1150-1250 DEG C is heated to, insulation pulls out each portion and reaches finished size, finishing goes out finished product.
The preparation method of the invention described above, preferably：
The upper height of external mold is 1610mm, and upper inner diameter is 2400mm, and lower height is 1000mm, and lower inner diameter is
2800mm；
The height of upper internal model is 770mm, and external diameter is 2300mm, and internal diameter is 1290mm；
The height of core insert is 1000mm, and external diameter is 2805mm, and internal diameter is 1380mm.
The double flange type forging process for fuel moulds of the large-scale narrow shelves of the present invention, it is possible to use open die forging forges double flange forge pieces,
Recessed shelves size is determined by upper internal model height and internal diameter, and upper internal model is two halves formula cylinder type, is removed after convenient shaping, structure
Simply, it can be used for multiple times.
The forging method of the present invention has following beneficial effect, and forging end flange and narrow shelves forging surplus diminish, from
And make forge weight small, save raw material；Narrow shelves position is not by tup widths affect, and allowance diminishes；Fibr tissue connects
Continuous property is preferable, better mechanical property.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is forging blank shape；
1 it is upper internal model in figure, 2 is core insert, 3 is external mold.
Embodiment
Embodiment
The present invention is further described with reference to the accompanying drawings and examples：
As shown in figure 1, the large-scale narrow shelves two-flange shaft head forging forging mold of the present invention is by upper internal model 1, the and of core insert 2
External mold 3 is constituted, and upper internal model 1 is two halves formula circle, and core insert 2 is circle class formation, and external mold 3 is step cylindrical structure, upper internal model 1
Matched with the internal structure of core insert 2 with forging outer shape, and it is supporting with external mold 3.
Specifically die size is：The upper height of external mold is 1610mm, and upper inner diameter is 2400mm, and lower height is
1000mm, lower inner diameter is 2800mm.
The height of upper internal model is 770mm, and external diameter is 2300mm, and internal diameter is 1290mm.
The height of core insert is 1000mm, and external diameter is 2805mm, and internal diameter is 1380mm.
Forging technology is made up of following steps：
First fire：Steel ingot diameter at butt end 1838mm, top diameter 1649mm, rising head ratio 15%, ingot height 2760mm emit
The high 699mm of mouth, material is S34MnV, and composition is C：≤ 0.5%, Mn：1.2-1.6%, P：≤ 0.020%, S：≤ 0.020%, Cr：≤
0.2%, V：≤0.13%
1250 DEG C are heated to, insulation, pressing tongs handle, chamfered edge goes to the mouth of a river；
Second fire：Be heated to 1250 DEG C, insulation, jumping-up to H=1385- φ 2650mm,
WHF methods are pulled out to diameter 2450, pressure shoulder, extract spacer flanger to diameter 2375mm, thickness 505mm,
Upper end is pulled out to diameter 1270mm, lower end diameter 1370mm；In second fire, then when pulling out the two ends of central flange,
It is pulled out than being 3.64-4.07；
3rd fire：1250 DEG C are heated to, insulation, core insert is placed in external mold, and the forging after insulation is put into core insert,
Internal model is placed into, upper smooth anvil upsetting end flange to size takes out forging, removes upper internal model；In 3rd fire, jumping-up upper end
When, its upset ratio is 3.64-4.08；
4th fire：1200 DEG C are heated to, insulation pulls out each portion and reaches finished size, finishing goes out finished product.
After the completion of forging, its mao of evil idea is as shown in Fig. 2 it is 2300mm, end flange that its specific size, which is spacer flanger external diameter,
External diameter be that height is 900mm, a diameter of 1190mm at 2200mm, the narrow shelves between two flanges；Lower end diameter is 1250mm.
Finished product room-temperature property：Tensile strength >=610MPa, yield strength >=350MPa, elongation percentage >=18%, the contraction percentage of area
>=40%, hardness 180-220HB, V-type ballistic work >=18J.
Claims (2)
1. a kind of forging method for preparing the double flange forgings of large-scale narrow shelves, it is characterised in that use following steps：
It is made up of using forging mold upper internal model, core insert and external mold；External mold is step cylindrical structure, under upper inner diameter is less than
Portion's internal diameter；Upper internal model is two halves formula cylinder type, and external diameter is less than external mold upper inner diameter, highly subtracted equal to external mold upper height
The difference of two flange height, internal diameter is substantially equal to forging upper end external diameter；Core insert is cylinder type, and external diameter is more than in external mold bottom
Footpath, highly equal to external mold lower height, internal diameter is substantially equal to forging lower end external diameter；
First fire：Heating Steel Ingots are to 1150-1250 DEG C, and insulation, pressing tongs handle, chamfered edge goes to the mouth of a river；
Second fire：1150-1250 DEG C is heated to, is incubated, by open die forging, jumping-up, pulling, pressure shoulder extracts spacer flanger, makes centre
The external diameter of flange and external mold upper inner diameter are of substantially equal；The two ends of central flange are pulled out again, make upper end external diameter and upper internal model internal diameter
Of substantially equal, lower end external diameter and core insert internal diameter are of substantially equal；In second fire, then when pulling out the two ends of central flange, it is pulled out
Than for 3.64-4.07；
3rd fire：1150-1250 DEG C is heated to, insulation, core insert is placed in external mold, and the forging after insulation is put into core insert
It is interior, internal model is placed into, jumping-up upper end makes end flange and external mold internal diameter of substantially equal, take out forging, remove upper internal model；
In 3rd fire, during jumping-up upper end, its upset ratio is 3.64-4.08；
4th fire：1150-1250 DEG C is heated to, insulation pulls out each portion and reaches finished size, finishing goes out finished product.
2. forging method according to claim 1, it is characterised in that：
The upper height of external mold is 1610mm, and upper inner diameter is 2400mm, and lower height is 1000mm, and lower inner diameter is
2800mm；
The height of upper internal model is 770mm, and external diameter is 2300mm, and internal diameter is 1290mm；
The height of core insert is 1000mm, and external diameter is 2805mm, and internal diameter is 1380mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576210.XA CN105170857B (en) | 2015-09-11 | 2015-09-11 | Large-scale narrow shelves two-flange shaft head forging forging mold and forging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576210.XA CN105170857B (en) | 2015-09-11 | 2015-09-11 | Large-scale narrow shelves two-flange shaft head forging forging mold and forging method |
Publications (2)
| Publication Number | Publication Date |
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| CN105170857A CN105170857A (en) | 2015-12-23 |
| CN105170857B true CN105170857B (en) | 2017-09-29 |
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| CN201510576210.XA Active CN105170857B (en) | 2015-09-11 | 2015-09-11 | Large-scale narrow shelves two-flange shaft head forging forging mold and forging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106077385B (en) * | 2016-08-03 | 2022-10-11 | 第一拖拉机股份有限公司 | Detachable electric radiation type forging die heating device and size determination method |
| CN110202082A (en) * | 2019-06-03 | 2019-09-06 | 武汉重工铸锻有限责任公司 | Forge the mold and forging method of clutch floral disc forging |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100988139B1 (en) * | 2005-09-01 | 2010-10-18 | 현대중공업 주식회사 | Die tools for closed die forging of thrust shaft |
| KR101275138B1 (en) * | 2011-09-15 | 2013-06-17 | 주식회사 마이스코 | multi-flange type journal of crankshaft |
| CN103056260B (en) * | 2011-10-21 | 2016-08-03 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of major axis class big inclination angle flange forge piece manufacturing process |
| CN102423790A (en) * | 2011-12-29 | 2012-04-25 | 通裕重工股份有限公司 | Forging die of large inclination tapered hole like forge piece and forging technology |
| CN203887125U (en) * | 2013-12-30 | 2014-10-22 | 武汉重工铸锻有限责任公司 | Low-speed diesel engine output-end shaft neck die forging forming mold |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of invention: Forging mold and forging method for large narrow double-flange shaft head type forgings Effective date of registration: 20190227 Granted publication date: 20170929 Pledgee: Yucheng Branch of Agricultural Bank of China Ltd. Pledgor: TONGYU HEAVY INDUSTRY Co.,Ltd. Registration number: 2019990000162 |
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Date of cancellation: 20210304 Granted publication date: 20170929 Pledgee: Yucheng Branch of Agricultural Bank of China Ltd. Pledgor: TONGYU HEAVY INDUSTRY Co.,Ltd. Registration number: 2019990000162 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Forging die and forging method for large narrow double flange shaft head forgings Effective date of registration: 20210304 Granted publication date: 20170929 Pledgee: Yucheng Branch of Agricultural Bank of China Ltd. Pledgor: TONGYU HEAVY INDUSTRY Co.,Ltd. Registration number: Y2021990000216 |
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Date of cancellation: 20230320 Granted publication date: 20170929 Pledgee: Yucheng Branch of Agricultural Bank of China Ltd. Pledgor: TONGYU HEAVY INDUSTRY Co.,Ltd. Registration number: Y2021990000216 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Forging Die and Forging Method for Large Narrow Range Double Flange Shaft Head Forgings Effective date of registration: 20230323 Granted publication date: 20170929 Pledgee: Yucheng Branch of Agricultural Bank of China Ltd. Pledgor: TONGYU HEAVY INDUSTRY Co.,Ltd. Registration number: Y2023980035948 |